Thieno[3,4-b]thiophene CAS 250-65-7

Purity 97%+In StockPharmaceutical Standards
CAS No.250-65-7
Molecular FormulaC6H4S2
Molecular Weight140.23 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Thieno[3,4-b]thiophene CAS 250-65-7 chemical structure

Description

Thieno[3,4-b]thiophene (CAS 250-65-7), molecular formula C6H4S2 and molecular weight 140.23 g/mol, is a CATO reference standard with documented purity and traceability.

Thieno[3,4-b]thiophene (C6H4S2) contains sulfur-containing functionality, an aromatic ring system. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

As a certified reference material (CRM), Thieno[3,4-b]thiophene meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC6H4S2
Molecular Weight140.23 g/mol
Purity97%+
StorageStore at 2-8°C
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Sulfur Atoms2

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